1#pragma once
2
3namespace mbgl {
4namespace style {
5
6class Undefined {};
7
8inline bool operator==(const Undefined&, const Undefined&) { return true; }
9inline bool operator!=(const Undefined&, const Undefined&) { return false; }
10
11} // namespace style
12} // namespace mbgl
13

source code of qtlocation/src/3rdparty/mapbox-gl-native/include/mbgl/style/undefined.hpp